We examined the broader regional health effects of Florida red tides, using measures that exhibited limitations, in contrast to the systematic (hourly) sampling that occurs at the Mote Marine Laboratory for the city of Sarasota. The regional approach required a broader temporal(monthly) focus, unlike earlier efforts that focused on weekly data on exposures and responses (Hoagland et al., 2009). Consequently, we were unable to look for lags associated with human health responses to bloom events. Moreover, the possibility exists that some FRT blooms occurring near the end of 1 month could result in illnesses at the beginning of the following month, leading potentially to larger standard errors around the exposure coefficients. The ability to characterize response lags suggests that, with prior warn- ing, humans might be able to react to the FRT hazard, and health care providers may be better prepared to provide medical care and treatments to those in need. Thus, testing for human health response lags remains a priority for future research.